PDF malware analysis — malicious · e426245843592626

MALICIOUS

PDF

68.6 KB Created: 2020-10-29 08:55:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 16678a2f964556a4db744c1300ff1f24 SHA-1: d6c66563e36019ba7700504787c7a1af1d1cfeab SHA-256: e4262458435926266d384cc74cad1023cce2f3869fc1ef03703f486f3404f7f5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ggtraff.ru/strik?keyword=crt+tv+for+sale+australia'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of malicious links strongly suggests an intent to redirect users to harmful content, likely for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ggtraff.ru/strik?keyword=crt+tv+for+sale+australia In PDF document text
- https://cdn-cms.f-static.net/uploads/4410447/normal_5f97b9850e30e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379471/normal_5f8c72b815354.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365657/normal_5f932a0571087.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401691/normal_5f90f148e6b75.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369317/normal_5f905db763b0c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366399/normal_5f930770bf336.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401972/normal_5f98ddf585cd1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379615/normal_5f8b07dc1350e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/0f827c77-8888-4276-a30e-395abdd20a19/dxo_optics_pro_11_elite_activation_code.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6554/8708/files/instant_pot_manual_high_pressure_setting.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0968/7208/files/kifaga.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3648cb6f-ec59-40c9-8d5a-c0afab095acb/bagaviwusefatiwolokona.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3ac37721-9dcf-4c74-a239-f7968b801821/que_es_situacion_comunicativa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/1603/5741/files/78326716708.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/5421/1487/files/download_messenger_android_app.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4807bb66-7254-4845-9cb3-1658669df8e2/vafosupifowisuvopemax.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8047/2984/files/cuisinart_classic_waffle_maker_instructions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/7187/3446/files/turtle_beach_xo_four_specs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/8494/6850/files/god_of_war_3_para_psp_android.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f87b15c1-50f2-4a1b-9ea3-f299a514d241/xosozajadafakuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3409/7317/files/catch_me_if_you_can_full_script.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6383/5814/files/best_task_manager_software_for_android.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/54187da8-6b83-40ac-8555-e4cb3d938821/paveg.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000cce6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCCE6	4724 bytes
SHA-256: `f90e533996966e8bdd18753bb2248225d6cc38bb8b5009c2a0beb480e85b5b5d`
`font_01_sfnt_off0000dd07.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD07	11896 bytes
SHA-256: `e0b2a12496ab67955501954522bd602bdcb0e34314e3c949a752065b2e748141`

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